Amber for Parrot is an object-oriented scripting language for the Parrot virtual machine. It combines the traditional advantages of scripting languages with support for software correctness and large-scale software engineering. Amber for Parrot has syntax and semantics somewhere between those of Eiffel and Ruby.
Berkeley DB XML is a native XML database engine for use within your product. Made available as a C++ library with language bindings for Java, Perl, Python, PHP, and Tcl, it integrates directly into your application (it is not a standalone database server). It provides XQuery access into a database of document containers. XML documents are stored and indexed in their native format using Berkeley DB as the transactional database engine.
EWG (Eiffel Wrapper Generator) is a tool that generates Eiffel wrapper classes for C libraries. It can be used to create libraries that bridge the gap between Eiffel and C. It aims to work for arbitrary ANSI C and with all common Eiffel compilers. It is ideal for creating cross-platform, cross-Eiffel-compiler, and cross-C-compiler C library wrappers. It can handle pretty much all ANSI C, but understands Visual C and GCC extensions as well.
Liberty Eiffel is a compiler for the Eiffel programming language. It continues the development of SmartEiffel, the GNU Eiffel Compiler. It is a complete, small, and fast Eiffel compiler, including an Eiffel to C compiler, documentation tools, a pretty printer, a debugger, and various other tools. It also includes a large library of classes distributed under the terms of the MIT/X Consortium License and a comprehensive set of wrappers/bindings for widespread free software libraries. Eiffel is an advanced object-oriented programming language that emphasizes the design and construction of high-quality and reusable software.